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SEITL, S. MIARKA, P. KALA, Z.
Original Title
GEOMETRY FUNCTIONS FOR EDGE CRACKS IN STEEL BRIDGE UNDER THREE- AND FOUR- POINT BENDING WITH VARIOUS SPAN
Type
journal article - other
Language
English
Original Abstract
Fatigue cracks are found during the regular structural inspections. To precisely describe/suggest propagation of fatigue cracks throughout structure and it’s designed service life, the knowledge of geometry functions describing the stress situation in front of the crack tip for relative crack lengths are important. The cracks usually propagate/initiated from the edge or the surface of the structural element, where the maximum value of applied load is achieved. The theoretical model of fatigue crack propagation is based on linear fracture mechanics (Paris law). Steel structural elements are subjected to various bending load (three-, four- point bending and pure bending etc.). The geometry functions for the edge cracks are calculated for various span according to real steel bridge elements and appropriate polynomial functions independent on the distance are proposed for three- and four- point bending load.
Keywords
Fracture mechanics, 3PB, 4PB, geometry function, stress intensity factor, edge crack.
Authors
SEITL, S.; MIARKA, P.; KALA, Z.
Released
31. 12. 2018
ISBN
1804-4824
Periodical
Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series
Year of study
18
Number
2
State
Czech Republic
Pages from
44
Pages to
49
Pages count
6
BibTex
@article{BUT152949, author="Stanislav {Seitl} and Petr {Miarka} and Zdeněk {Kala}", title="GEOMETRY FUNCTIONS FOR EDGE CRACKS IN STEEL BRIDGE UNDER THREE- AND FOUR- POINT BENDING WITH VARIOUS SPAN", journal="Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series", year="2018", volume="18", number="2", pages="44--49", doi="10.31490/tces-2018-0015", issn="1804-4824" }